Spin-polarized  transport in a two-dimensional electron  gas with interdigital-ferromagnetic contacts

C.-M. Hu; Junsaku Nitta; Ane Jensen; Jørn Bindslev Hansen; Hideaki Takayanagi

doi:10.1103/PhysRevB.63.125333

Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts

C.-M. Hu, Junsaku Nitta, Ane Jensen, Jørn Bindslev Hansen, Hideaki Takayanagi

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Abstract

Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

Original language	English
Journal	Physical Review B Condensed Matter
Volume	63
Issue number	12
Pages (from-to)	125333
ISSN	0163-1829
DOIs	https://doi.org/10.1103/PhysRevB.63.125333
Publication status	Published - 2001

Bibliographical note

Copyright (2001) American Physical Society

Keywords

DEVICE
SEMICONDUCTOR INTERFACE
IN0.53GA0.47AS/IN0.52AL0.48AS HETEROSTRUCTURE
INJECTION
GATE CONTROL
ANISOTROPIC MAGNETORESISTANCE
ORBIT INTERACTION

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title = "Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts",

abstract = "Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.",

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T1 - Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts

AU - Hu, C.-M.

AU - Nitta, Junsaku

AU - Jensen, Ane

AU - Hansen, Jørn Bindslev

AU - Takayanagi, Hideaki

N1 - Copyright (2001) American Physical Society

PY - 2001

Y1 - 2001

N2 - Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

AB - Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

KW - DEVICE

KW - SEMICONDUCTOR INTERFACE

KW - IN0.53GA0.47AS/IN0.52AL0.48AS HETEROSTRUCTURE

KW - INJECTION

KW - GATE CONTROL

KW - ANISOTROPIC MAGNETORESISTANCE

KW - ORBIT INTERACTION

U2 - 10.1103/PhysRevB.63.125333

DO - 10.1103/PhysRevB.63.125333

M3 - Journal article

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VL - 63

SP - 125333

JO - Physical Review B Condensed Matter

JF - Physical Review B Condensed Matter

IS - 12

ER -